The observed rabbit population on an island is given by the function p(t) =-4t^2+80t+1200, where t is the time, in years, since the teachers began observing the rabbits. According to this quadratic function, after how many years will the rabbit population reach its peak

Answers

Answer 1

Answer:

The rabbit population will reach its peak after 10 years.

Step-by-step explanation:

Suppose we have a quadratic function in the following format:

[tex]p(t) = at^{2} + bt + c[/tex]

The vertex of the function is the point:

[tex](t_{v}, p(t_{v})[/tex]

In which

[tex]t_{v} = -\frac{b}{2a}[/tex]

If a is negative, the vertex is a peak.

In this question:

[tex]p(t) = -4t^{2} + 80t + 1200[/tex]

So

[tex]a = -4, b = 80, c = 1200[/tex]

According to this quadratic function, after how many years will the rabbit population reach its peak

This is [tex]t_{v}[/tex]

[tex]t_{v} = -\frac{b}{2a} = -\frac{80}{2*(-4)} = 10[/tex]

The rabbit population will reach its peak after 10 years.


Related Questions

If X - 14 = 465, what is the value of X?

Answers

Answer: The value of x is 479

Step-by-step explanation:

x -14 = 465

   +14     +14

x=  479

Answer:

x=479

Step-by-step explanation:

x-14=465 Move constant to the right-hand side and change its sign

x=465+14 add the numbers

x=479

HOPE THIS HELPS :)

If two pieces of fruit are randomly picked out of a covered basket with 5 apples and 3 oranges, what is the probability that the two pieces of fruit are oranges?

Answers

Answer:

i would say 3/8 if thats an option

Step-by-step explanation:

Probability helps us to know the chances of an event occurring. The probability that the two pieces of fruit are oranges is 3/28.

What is Probability?

Probability helps us to know the chances of an event occurring.

[tex]\rm Probability=\dfrac{Desired\ Outcomes}{Total\ Number\ of\ outcomes\ possible}[/tex]

Given that the two pieces of fruit are randomly picked out of a covered basket with 5 apples and 3 oranges. Therefore, the probability that the two pieces of fruit are oranges is,

Probability = (3/8) × (2/7) = 6/56 = 3/28

Hence, the probability that the two pieces of fruit are oranges is 3/28.

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If two pyramids have the same heights what must be true of the pyramids for them to also have the same volume

Answers

Answer:

It is possible, but you must first measure the width.

Step-by-step explanation:

It is possible, but you must be sure.

Answer:

they whould need diffrent width and length

Step-by-step explanation:

imagen you have 2 glasses of watter, and they are both 6 inches high. But one glass has a longer width (aka how far backwords). Wich could hold more watter


1) Andy worked 17 hours one week. He earned $225.25. How much was he paid per hour?

Answers

Answer:

Andy makes $13.25 per hour

Step-by-step explanation:

Take the total amount and divide by the hours worked

225.25/17

13.25

Andy makes 13.25 per hour

Answer:

13.25 an hour

Step-by-step explanation:

225.25 divided by 17 = 13.25

Kono Dio Da!!!!

The area of a triangle is 16 units square. The length is twice the height. Find the height

Answers

The formula for area of a triangle is 1/2 x base x height.

Let the height = x

Then the base (length) = 2x ( twice the height)

You know have 16 = 1/2 * 2x * x

Multiply both sides by 2 to remove the 1/2:

32 = 2x * x

Simplify the right side:

32 = 2x^2

Divide both sides by 2:

16 = x^2

Take the square root of both sides:

X = 4

The height is 4 units and the length is 8 Units

Tanya has 32 meters of fence to enclose around three sides of her garden. What are the dimensions and the area of the largest rectangular garden that Tanya can create in the manner?

Answers

Answer:

Check the explanation

Step-by-step explanation:

Kindly check the attached image for the step by step explanation of the answer to the question

Give the sum of 1/2 and 8/12 in simplest form

Answers

Answer:

7/6

Step-by-step explanation:

sum of 1/2 & 8/12 = 1/2 + 8/12

= 7/6

hope this help you !! ;))))

Sarah and Riley are going to make 2 batches of muffins. The smaller batch is 23the size of the larger batch. The recipe for the larger batch requires 35 cup of milk. How much milk will they need to make the smaller batch?

Answers

21...is equal to 11+10

Question 3 (1 point)
Which best describes the range of the function f(x)=2(3)^3?

Answers

The range is 0 to infinity because the line keeps on going

Answer:

(0, ∞ )

Step-by-step explanation:

Basic exponential functions always take on values ranging from (but not touching) 0 upward.

Thus, the range of this particular exponential function is (0, ∞ )

Alan has to carry 234 apples from a farm to the market How many baskets will he need, given that each basket can hold 31 apples

Answers

Answer:

8 baskets

Step-by-step explanation:

Answer:

8 baskets

Step-by-step explanation:

I believe is 8

PLEASE HELP ME! Awarding brainliest!!

Pythagorean theorem.

Answers

Answer:

116.6

Step-by-step explanation:

100^2 + 60^2 = c^2

1360 = c^2

square root of 1360 is 116.6

Answer:

Shortcut = 116.62

Step-by-step explanation:

Hypotenuse = [tex]\sqrt{a^{2} +b^{2} } = \sqrt{60^{2} +100^{2} } = 116.61904 = 116.62[/tex]

solve. -7 2/3+(-5 1/2)+8 3/4

Answers

Answer:

I'm pretty sure it's 21 11/12. Don't get mad if I'm wrong

Step-by-step explanation:

-7 2/3 - 5 1/2 + 8 3/4

= -7 8/12 - 5 6/12 + 8 9/12

12 14/12 + 8 9/12

20 23/12

= 21 11/12

Need the answer to this equation

.3a + .8 = .5a - 2

Answers

Answer:

14

Step-by-step explanation:

.3a+.8=.5a-2

Subtract. 3a from both sides:

.8=.2a -2

Add 2 to both sides:

2.8=.2a

Multiply both sides by 5:

a=14

Hope this helps!

Answer:

a = 14

Step-by-step explanation:

.3a + .8 = .5a - 2

.3a - .5a = -2 - .8

-.2a = -2.8

a = -2.8/-.2

a = 14

what is the equation of the circle with center (5,-4) and containing the points (5,-2)

Answers

Answer:

The equation of a circle is [tex](x-5)^2+(y+4)^2=4[/tex] .

Step-by-step explanation:

-The equation of a circle is:

[tex](x-h)^2+(y-k)^2=r^2[/tex] (where center is [tex](h,k)[/tex], the point [tex](x_{1},y_{1})[/tex] and the radius known as [tex]r[/tex]).

-Use the center (5,-4) and the point (5,-2) for the equation:

[tex](5-5)^2+(-2+4)^2=r^2[/tex]

-Solve the equation:

[tex](5-5)^2+(-2+4)^2=r^2[/tex]

[tex]0 + (-2)^2=r^2[/tex]

[tex]4 = r^2[/tex]

[tex]\sqrt{4} = \sqrt{r^2}[/tex]

[tex]2 = r[/tex]

-After you found the radius, use the center (5, -4)  and radius 2 to get the equation of a circle:

[tex](x-5)^2+(y+4)^2=2^2[/tex]

-Then, after you have the equation, the radius needs to simplified by the exponent:

[tex](x-5)^2+(y+4)^2=4[/tex]

Can I please have help?

Answers

Answer:

.25 fraction form

Step-by-step explanation:

118th pie ft3

The missing dimension of the cone given is h = 3/2 feet.

Given a cone.

It is required to find the missing dimension of the cone.

It is given that:

Diameter of the base of the cone = 2/3 feet

The diameter is twice the length of the radius.

So, the radius of the base of the cone = (2/3) / 2 = 1/3 feet

Here the height of the cone is the missing dimension.

Given the volume of the cone = 1/18 π ft³

The formula to find the volume of the cone is:

V = 1/3 πr²h

Here r is the radius and h i the height.

Substitute the given values.

1/3 π(1/3)²h = 1/18 π

1/27 h = 1/18

h = 27/18 = 3/2 feet

Hence the height is 3/2 feet.

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EMERGENCY!!!! EXTRA POINTS! I HAVE POSTED THIS QUESTION 5 TIMES AND HAD TO REPORT ALL RESPONSES! I ACTUALLY NEED HELP!
The amusement park in Riverdale charges a $10 entrance fee plus $1 per ride. The amusement park in Esterdamb charges a $5 entrance fee and $2 per ride. For how many rides will the cost be the same for both amusement parks? x= # of rides
Number of rides_____?
Cost_____?

Answers

Answer:

5 rides $15

Step-by-step explanation:

.

Answer:

omg riverdale is my favorite show!

Step-by-step explanation:

5. Decide whether each statement is true or false. (1 point each)

a. T/F: If there is a strong correlation between two variables, the correlation coefficient will be close to –1 or 1.

b. T/F: If there is a negative correlation between two variables, the slope of the regression line will be positive.


c. T/F: If there is a strong correlation between two variables, there is a cause-and-effect relationship.


d. T/F: The best model for data that change direction is a linear model.


e. T/F: A regression line is useful for predicting unknown values within the range of the observed data values.

Answers

Answer:

T

F

F

F

T

Hope This Helped! :D

Answer:

ba p e x

Step-by-step explanation:

t

f

f

f

t

The legs of a right triangle are 4 units and 7 units. What is the length of the hypotenuse?

Answers

Answer:

8.06/65

Step-by-step explanation:

4^2+7^2=8.06^2

16+49=65

Answer:

square root of 65

Step-by-step explanation:

4^2 + 7^2 = x^2

16+ 49= x^2

x^2 = 65

x= sqrt 65

Please I need help with this one

Answers

Answer:

$0.60

Step-by-step explanation:

Crunch Bunch cereal boxes come in two sizes. The mini What is the height of the standard size box of Crunch

cereal box of Crunch Bunch is a reduction of the

Bunch?

standard box

1.6 inches

8 in

6.4 inches

10 inches

15.2 inches

Standard Box

Mini Box


The answer is 10

Answers

Answer:

10 inches

Step-by-step explanation:

For we solve this, we can use proportionality

Using the following method

Mini box: height 4 inches and width 3.2 inches

The proportion is: 4 in (height) / 3.2 in (width)

Standard box: height x inches and width 8 inches

x in (height) / 8 in ( width)

So:

x /8= 4/ 3.2

Solving for x:

x = (4/ 3.2) 8

x = 10 inches

As the answer

Answer:

10 inches

Step-by-step explanation:

Write the equation of the circle graphed below.

Answers

Answer:

The equation of the circle is [tex]{ \left(x - 1 \right)^2 + \left( y - 2 \right)^2 = \frac{ 25 }{ 4 } }[/tex].

Step-by-step explanation:

This is the general standard equation for the circle centered at (h, k) with radius r.

                                           [tex](x-h)^2+(y-k)^2=r^2[/tex]

From the graph we know that the center, the red point, is (1, 2) and the circle pass through the point (2.5, 4) the blue point.

To find the standard equation of the circle you must:

Step 1: Find circle radius.

To find a radius of a circle we will compute the distance between points [tex]C=(1, 2)[/tex] and [tex]P=(2.5, 4)={ \left( \frac{ 5 }{ 2 } , 4 \right) }[/tex]. The distance can be computed by using formula:

[tex]r = \sqrt{ \left(C_x - P_x\right)^2 + \left(C_y - P_y\right)^2 }\\\\r = \sqrt{ \left(1 - \frac{5}{2} )^2 + \left(2 - 4)^2 }[/tex]

[tex]r=\sqrt{\frac{3^2}{2^2}+2^2}=\sqrt{\frac{9}{4}+4}=\sqrt{\frac{25}{4}}=\frac{5}{2}[/tex]

Step 2: Substitute the values of the radius and the center into the general standard equation for the circle.

[tex]\begin{aligned} \left(x - 1 \right)^2 + \left(y - 2 \right)^2 &= \left(\frac{ 5 }{ 2 }\right)^2 \\ \left(x - 1 \right)^2 + \left( y - 2 \right)^2 &= \frac{ 25 }{ 4 } \end{aligned}[/tex]

prime numbers less than 30

Answers

Answer:

2,3,5,7,11,13,17,19,23,29

Step-by-step explanation:

Answer:

Hey!

All the Prime numbers under 30 are...

2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Step-by-step explanation:

HOPE THIS HELPS!!

The price of one share of a company declined $3.50 per day for 4 days in a row. What is the overall change in the price of one share? You may find using a number line to be helpful.


The overall change in the price of one share is
dollars.

Answers

It is for sure 14 dollars

Solve the equation.
-9x + 1 = -x + 17
X=-8
O X=-2
X = 2
X = 8

Answers

Answer:

-9x + x = 17 – 1  

8x = 16

X = 16/8  

X=2

What is the value of x in the equation: 0.7x - 1.4 = -3.5?

A. -7
B. -3
C. 3
D. 7

Answers

Answer:

B). -3

add the -1.4 to-3.5 then divide the solution

Answer:

It's B. -3 (please mark as brainliest)

Step-by-step explanation:

0.7x−1.4=−3.5

Step 1: Add 1.4 to both sides.

0.7x−1.4+1.4=−3.5+1.4

0.7x=−2.1

Step 2: Divide both sides by 0.7.

0.7x

0.7

=

−2.1

0.7

So it's x=−3

Squaring both sides of an equation is irreversible. Is Cubing both sides of an equation reversible? Provide numerical examples to help support your answer.

Answers

Answer:

Cubing both sides of an equation is reversible.

Step-by-step explanation:

Squaring both sides of an equation is irreversible, because the square power of negative number gives a positive result, but you can't have a negative base with a positive number, given that the square root of a negative number doesn't exist for real numbers.

In case of cubic powers, this action is reversible, because the cubic root of a negative number is also a negative number. For example

[tex]\sqrt[3]{x} =-1[/tex]

We cube both sides

[tex](\sqrt[3]{x} )^{3} =(-1)^{3} \\x=-1[/tex]

If we want to reverse the equation to the beginning, we can do it, using a cubic root on each side

[tex]\sqrt[3]{x}=\sqrt[3]{-1} \\\sqrt[3]{x}=-1[/tex]

There you have it, cubing both sides of an equation is reversible.

PLEASE HELP!!!!!!!!!!
(30 POINTS)

Pizza Palace offers customers 4 kinds of crust along with 5 different meats, 4 different
cheeses, and 3 vegetables for toppings. How many different combinations of pizza are
possible made with 1 choice of crust, 1 of meat, 1 of cheese, and 1 of vegetable?

Answers

Answer:

240

Step-by-step explanation:

4 kinds of crust along with 5 different meats, 4 different  cheeses, and 3 vegetables for toppings

Combos = 4*5*4*3

               =240

If 0≤θ≤90 and sin(θ) = p, then which of the following gives the value of tan(θ)?

1)p/1-p

2)(√ 1-p^2)/p

3)p/(√ 1-p^2)

4)√1-p^2

Answers

Answer:

p/√(1-p^2)

Step-by-step explanation:

Firstly we can write our sin (θ) = p/1

Mathematically, the sine of an angle refers to the ratio of the opposite to that of the hypotenuse. Hence we can say that p is the opposite while 1 is the hypotenuse of the right-angled triangle.

Now to get the third side of the right angled triangle, we use the pythagoras’ theorem. This states that the square of the hypotenuse equals the addition of the squares of the other two sides of the right angled triangle. Thus, mathematically:

1^2 = p^2 + adjacent^2

Adjacent^2 = 1 - p^2

Adjacent = √(1-p^2)

The tan of an angle refers to the ratio of the opposite to the adjacent.

Thus, our tan here will be p/√(1-p^2)

Tan θ = p/√(1-p^2)

Answer:

3)p/(√ 1-p^2)

Step-by-step explanation:

In trigonometry, the three fundamental or basic functions are represented by the notation SOH CAH TOA where

SOH

Sin θ = opposite/hypotenuse

Cos θ = Adjacent / hypotenuse

Tan θ = Opposite / Adjacent

And from Pythagoras theorem,

Opposite ² + Adjacent ² = Hypotenuse²

Hence if  Sin θ = p/1, the opposite side is p, the hypotenuse side is 1 then

the adjacent side from the equation above

Adjacent side² = 1 - p²

Adjacent side = √(1 - p²)

Tan θ = p/√(1 - p²)

I'm a bit stuck, well uhhh you'll see. Please help!! is she 25 or 26 ? ? ?

Answers

Answer:

25 years old

Step-by-step explanation:

19+3=22

19+6=25

19+25+22=66

she is 25 years old


There are 128 competitors in a tennis tournament. If Milo places in the 85th percentile, how many people
placed above him in the final rankings?
A)109
B)21
C)103
D)19

Answers

Answer: A


Explanation: multiply 128 by .85
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